William m



(No Model.)

W. M. SEAWARD.

DUMB WAITER STOP- No. 369,967. Patented Sept. 13, 1887.

WITNESSES: //VVE/V70/? M WILLIAM M.SEAWARD I BYf-J ATTORNEY NITE STATES ATENT OFFICE.

\VILLIAM M. SEAVARD, OF NEHV YORK, N. Y.

DUMB-WAITER STOP.

SPECIFICATION forming part of Letters Patent No. 369,967, dated September 13. 1887.

Application filed April 30, 1887.

To all whom it may concern.-

Be it known that I, WILLIAM M. SEAWARD, a citizen of the United States, and a resident of New York,-in the county of New York and State of New York, have invented certain new and useful Improvements in Automatic Dumb- Naiter Catches and Stops, of which the follow ing is a specification.

My invention relates to means for automatically holding the carriage of a dumb-waiter at desired points, and also for lessening the concussion at the top and bottom of the wellhole.

The invention consists, first, in the novel construction of an oscillating spring-bolt attached to the wall of the well-hole and engaging with a pin projecting from the carriage, and, further, in the novel construction of a cushion placed at the top and bottom of the well-hole for engagement with the top and bottom of the carriage.

In the accompanying drawings, Figure 1 represents a general view of a dumb-waiter provided with my improvements. Figs. 2 and 3 are views of the oscillating spring-bolt. Figs. 4 and 5 are views of the pin projecting from the carriage. Figs. 6 and 7 are views of the cushion.

A represents a metal plate,which is screwed to the wall of the well-hole in which the earriage works. About the center of the plate is formed a loop or keeper, a, with a lug, a proj ecting outward from it.

B represents a bolt,which works in the loop orkeeper a and oscillates on a pivot, (d, in said keeper.

0 is a spring made of elastic wire and having one end secured in a stud, a, on the plate A and the other end engaging with a stud, a on the bolt, while midway of its length the spring passes through a hole in the lug a By this means the bolt is pressed in a direction toward the left-hand side of Fig. 3 of the drawings. The movement of the bolt in the opposite direction is limited by a stud, a, projecting from the plate, and at the opposite end of the plate is a curved rib, a, which serves as a guard to prevent the loss of the bolt in case the pivot a should break. At one end of the bolt is a hole, a for the attachment of a cord Serial No. 236,713. (No model.)

for pulling the bolt in a direction opposite to the spring.

0 represents a plate having a socket, c, in which works a pin, D, which is adjustable in said socket and is held in place by a set screw, (1.

The plates G, carrying the pins D, as shown in Figs. 4 and 5, are secured to the carriage near the front thereof, one at the top, as shown in Fig. 1, and one at the bottom, (not shown,) so that the pins D will project over the sides of the carriage to engage the sides of the bolts B, near the ends thereof, by pressing said bolts B back until the pins D are clear of the sides of the bolts B, and then the pins D engage with the ends of the bolt B to hold the carriage at the desired point.

The plates A are screwed to the wall of the well-holetwo at each story-at a distance apart somewhat greater than the height of the carriage. One of the plates is placed in the position shown in Fig. 3 and the other in a reverse position. As the carriage ascends or descends, the pins D, being placed in nearly the same perpendicular line with the bolts B, press back the bolts B by engaging their sides, like a latch of a door,near the end thereof, until they are clear of them,and then engage with the ends thereof, so as to hold the carriage at the desired point. By pulling on the cord attached to the boltsBsaid bolts are pulled back, so as to allow the pins to pass them. In the up-and-down motion of the carriage the pins D engage the side ends of the bolts B, near the hole a thereof, which said part of the bolts B being in a different vertical line from the side of the keeper or loop a the pins D pass and repass the keeper or loop a without coming in contact therewith.

E represents a plate having a socket,f, in which is fitted a rubber plug, G. These plates are screwed to the wall of the well-holeat the top and bottom, as shown in Fig. 1, and serve as cushions to lessen the concussion of the earriage when it rises or falls.

The cushions, if desired, can be applied to window-sashes.

What I claim as new, and desire to secure by Letters Patent, is

1. As an improved article of manufacture,

an attachment for dumb-waiters for automaticarriage, constructed and arranged as herein cally holding the carriage, consisting of a described, in combination with the oscillating 10 metal plate having a loop or keeper provided spring-bolt B, substantially as and for the pur- With a lug formed thereon. in combination pose set forth.

5 with an oscillating spring-bolt, B, constructed, WILLIAM M. SEAWARD.

arranged, and operating substantially as and Witnesses: for the purpose herein described. FRANCIS C. BOWEN,

2. The adjustable pinsD, mounted upon the V JAs. S. EWBANK. 

